According to the Can Manufacturers Institute, the energy used to make an aluminum can from recycled aluminum is 5%% of the energy used to make an aluminum can from virgin ore. In a typical year, 1.7 billion pounds of aluminum cans are recycled. Part A How much energy is thermally transferred to get this mass of aluminum from 20 ∘C∘C to its melting point, 660 ∘C∘C?

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

Can any one me on number 4? i do know that it’s not a cause i gotten that wrong on the first try.